Based on these findings, we conclude that OPN overexpression in ENU-induced gliomas occurs within a specific subset of intratumoral glial fibrillary acidic protein-positive cells and becomes evident at the stage of tumor progression.
The mechanism of tumor-suppressing effects of antibodies can be related to inhibition of specific functions of connexin 43 in glioma cells in the peritumoral zone.
Gamma-linolenic acid inhibits both tumour cell cycle progression and angiogenesis in the orthotopic C6 glioma model through changes in VEGF, Flt1, ERK1/2, MMP2, cyclin D1, pRb, p53 and p27 protein expression.
The anti-c-Met probe (anti-c-Met-Gd-DTPA-albumin) was administered intravenously, and as determined by an increase in MRI signal intensity and a corresponding decrease in regional T(1) relaxation values, this probe was found to detect increased expression of c-Met protein levels in C6 gliomas.
These results suggest that Akt2 contributes to glioma cells migration and invasion by regulating the formation of cytoskeleton, influencing adhesion and increasing expression of MMP-9.
In addition, B/b130 is the major isoform of BEHAB/brevican that is up-regulated in a rat model of invasive glioma and may therefore contribute to the invasive ability of glioma cells.
It will be important to investigate the effect of inhibiting cleavage of BEHAB/brevican in these cells and to determine the therapeutic potential of inhibiting BEHAB/brevican cleavage in gliomas.
They indicate that microvascular evolution differs significantly between the two glioma models, in good agreement with expression of angiogenic factors (vascular endothelial growth factor, angiopoietin-2) and with activities of matrix metalloproteinases, also assessed in this study.
Intracranial stereotaxic cannulation for development of orthotopic glioblastoma allograft in Sprague-Dawley rats and histoimmunopathological characterization of the brain tumor.
The phosphorylation of Src, caveolin-1, and caveolin-2 began to increase at 0.5 h and reached a maximum at 1 h. Immunohistochemical and immunofluorescent staining showed that caveolin-1 and caveolin-2 were co-localized in the glioma microvascular endothelial cells and glioma cells.
pERK, pAkt and pBad: a possible role in cell proliferation and sustained cellular survival during tumorigenesis and tumor progression in ENU induced transplacental glioma rat model.
Consequently, significantly improved therapeutic effect was achieved in a nude mouse glioma model, using siRNA-NBs bearing siRNA to target the anti-apoptosis gene sirtuin 2 (SIRT2).
Further, we show an enhanced in vivo migration of the CXCR3 transfected HiB5 cells over the corpus callosum towards an IP-10 and I-TAC expressing glioma, as compared to wild type HiB5 cells.
Combining a T9/9L glioma vaccine, expressing the membrane form of M-CSF, with a systemic antiangiogenic drug-based therapy theoretically targeted toward growth factor receptors within the tumor's vasculature successfully treated >90% of the rats bearing 7-day-old intracranial T9/9L gliomas.
Two stable transfectants were made using a tumorigenic human glioma cell line, U-373 MG. Galbeta1,4GlcNAc alpha2,6-sialyltransferase (ST6Gal I) transfectants were made to replace the endogenous alpha2,3-linked sialic acids with alpha2,6-linked sialic acids.